FreeBSD: Chase /usr/X11R6 death (replaced by everything in one prefix).
diff --git a/configs/freebsd b/configs/freebsd
index 447faf9..34440eb 100644
--- a/configs/freebsd
+++ b/configs/freebsd
@@ -15,7 +15,7 @@
 DEFINES = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_BSD_SOURCE -DUSE_XSHM \
 	-DHZ=100
 
-X11_INCLUDES = -I/usr/X11R6/include
+X11_INCLUDES = -I/usr/local/include
 
 CFLAGS += $(WARN_FLAGS) $(OPT_FLAGS) $(PIC_FLAGS) $(DEFINES) $(X11_INCLUDES) -ffast-math -pedantic
 
@@ -23,5 +23,5 @@
 
 GLUT_CFLAGS = -fexceptions
 
-EXTRA_LIB_PATH = -L/usr/X11R6/lib
+EXTRA_LIB_PATH = -L/usr/local/lib
 APP_LIB_DEPS = -L$(TOP)/$(LIB_DIR) $(EXTRA_LIB_PATH) -l$(GLUT_LIB) -l$(GLU_LIB) -l$(GL_LIB) -lXext -lXmu -lXi -lX11 -lm